The nearest airport is at Shimla. The nearest Railhead is also Shimla.
From Shimla, you will get buses to Karsog Valley. Shimla is only 100 km away, but the bus journey will take a lot of time.
There are budget hotels available in Karsog town. Chindi is a village 15 km before Karsog town where you will find HPTDC hotels and other resorts.
Best Time to visit
Best time to visit Karsog Valley is between February and July.
Things to do at Karsog
As I have already said, the place is not yet developed in terms of tourism. You can simply enjoy the beauty of the place. You can also visit the nearby temples.